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Calculating how much lava rocks you need - circular/round fire pit - to calculate how many pounds of lava rocks you'll be needing for your project, simply: Radius Inches x Radius Inches x 3. 14 = square inches / then divide the square inches you have by 16 = Number of Pounds you'll be needing This is calculated for the optimal depth for Lava Rocks of 2" Deep.

Ideal drainage these lava rocks are all natural and organic. It is best for succulent hobbyist and other succulent lovers. Othersthe sizes of the pieces are 3 - 6 mm approximately and these volcanic lava rock is perfect for diffusing aromatherapy essential oils!But you need to cleaning until there are no impurities.
Multi usagelava rocks not only can be used as a soil additive, they but also can be used for ashtrays, or bottom layer, or top dressing in the art of bonsai, garden soil amendment. Ideal for pots with no drainage holes you can place the lava rocks at the bottom of the planter so the water can pool without drowning the roots. Packedthe red lava rock is 2. 8lbs. Well packed and simply tear off the top then reseal.



Helps to maintain moisture, prevent erosion, aerate soil, and improve drainage. Adding porous lava rocks instead of mulch to maintain plants like orchids, cacti, succulents, and bonsai trees ensures proper drainage while maintaining moisture.
Multi-use -- the temperature tolerance and quality of toyPOPOR lava rocks make it useful for filling aquariums, ashtrays, fire media, fire pits, garden soil amendment, in addition to top dressing for plants. Volcanic rock great as a ground cover or for garden paths and planter beds.

4 dry quart size: comes in a 4 quart size bag for your small planting or repotting needs. Ready to use: red lava rock is sifted and sieved for a uniform size that is ready for direct potting use.

Ideal drainage: faster draining blend, cacti, succulents, get rid of root rot. Potted soil additives: horticultural black lava an ideal amendment for bonsai soil, adds weight to stabilize plants in the soil, can also be used for top dressing, its wet-dry color helps set water schedules.2
Diy rocks: these colorful lava rocks are good for outdoor indoor home decoration, succulent, craft projects, scene setting, vase fillers, cactus bonsai, houseplant, fairy Gardening, garden, terrarium, flowerpot, outdoor decorative and more.100% natural volcanic scoria: pre-washed with no artificial fillers or colors, does not break down easily. Neutralize soil pH, providing a better growth environment for plants.

Not only can you use these rocks as a top dressing, No dyes, fire pits, garden soil, but they can also be used in aquariums, and ashtrays.
Versatile lava rock for bonsai: for those of you who are looking to mix your own soil mix, grit, the Tinyroots red lava can be used with pine bark fines, surface, and even dirt. Use only the portion of the succulent and bonsai rocks that you require at the current moment and no need to worry about storage. Locally sourced: comes in a resealable bag & manufactured in the USA.


Due to transportation bump, it'll be some powder on surface. Ideal drainage faster draining blend, succulents, cacti, no root Rot. Before you first use, make sure to wash 2-3 times with water until their surface clean and smooth.
Diy materialwith multiple colors, fish tank, scene setting, garden, houseplant, terrarium, craft projects, succulent, this colorful gritty mix is good for home decoration, vase fillers, cactus bonsai, fairy Gardening, flowerpot, outdoor decorative and more. It can also be used to fill aquariums, prevent erosion, Volcanic rock plus colored gritty mix. Lava rocks can be used for top dressing of plants, ashtrays, and fire pits. Adding porous lava rocks instead of mulch to maintain plants such as orchids, and bonsai trees. Sizethe 5.
1. Venetian Princess
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3/4" .75" 40 Lbs, Red Lava Rock, Venetian Princess Lava Rocks, Decorative Landscaping Rocks or Gas Fire Pits Rocks
#adVenetian Princess #ad - Lava rocks is heat proof and ideal usage in Indoor and Outdoor Gas Fire Pits and Fireplaces. Calculating how much lava rocks you need - square/rectangular fire pit - width left & right x depth front to Back = Square Inches / Then Divide the Square Inches you have by 16 = Number of Pounds you'll be needing to get how many pounds of Lava Rocks you'll be needing This is calculated for the optimal depth for Lava Rocks of 2" Deep.More information #ad
Lava rocks can be used with Fire Pits, Fireplaces, or Decoratively. Lava rocks size ranges from 1/2" to 1-1/2" - Available in Black or Red - 10 Pounds or 40 Pounds. Calculating how much lava rocks you need - circular/round fire pit - to calculate how many pounds of lava rocks you'll be needing for your project, simply: Radius Inches x Radius Inches x 3. 14 = square inches / then divide the square inches you have by 16 = Number of Pounds you'll be needing This is calculated for the optimal depth for Lava Rocks of 2" Deep.
Brand | Venetian Princess #ad |
Manufacturer | Venetian Princess #ad |
More information #ad
2. CARURBODY
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CARURBODY Red Lava Rocks for Plants -100% Pure Volcanic Rock No Dyes or Chemicals-Best Lava Stones Top Dressing for Cacti Succulents Plants,Bonsai
#adCARURBODY #ad - Lava rocks are porous and will absorb and slowly release excess water back to the plant. You can take the portion you need with the cactus and succulent soil mix, and then seal it back for perfect prevention and storage. Perfect for preventing root rot.Ideal drainage these lava rocks are all natural and organic. It is best for succulent hobbyist and other succulent lovers. Othersthe sizes of the pieces are 3 - 6 mm approximately and these volcanic lava rock is perfect for diffusing aromatherapy essential oils!But you need to cleaning until there are no impurities.
More information #ad
Professional formulation this lava rock is made up professional formulation which keep its well drainage and also supply the necessary nutrition for plants growing. Multi usagelava rocks not only can be used as a soil additive, they but also can be used for ashtrays, or bottom layer, or top dressing in the art of bonsai, garden soil amendment. Ideal for pots with no drainage holes you can place the lava rocks at the bottom of the planter so the water can pool without drowning the roots. Packedthe red lava rock is 2. 8lbs. Well packed and simply tear off the top then reseal.
Brand | CARURBODY #ad |
Manufacturer | CARURBODY #ad |
Weight | 2.2 Pounds |
Part Number | A-02 |
More information #ad
3. Hoffman
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Hoffman 14452 Volcanic Lava Rock, 2 Quarts
#adHoffman #ad - Bright red lava rock. This product weighs 2 quarts. A great decorative moisture retainer for potted or beeded plants. Volcanic lava rock. This product weighs 2 quarts.More information #ad
Brand | Hoffman #ad |
Manufacturer | Hoffman #ad |
Height | 15 Inches |
Length | 2 Inches |
Weight | 2 Pounds |
Width | 8.64 Inches |
Part Number | 14452 |
Model | 14452 |
More information #ad
4. JK Global Imports
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And Other Container Grown Plants, Cactus, enables Optimal Drainage, Improves Soil Aeration 1/4 inch Black Lava Rock 2 Quarts Bag, Soil Aggregate for Bonsai, Succulents, Lava Rock
#adJK Global Imports #ad - Helps to split larger roots into smaller feeder roots. Our lava rock comes from Utah. Ideal aggregate for water drainage and aeration.More information #ad
A must in every soil mixture! Resealable stand up pouch made from recycled material ️. Great soil aggregate for Orchids, Cactus and other container grown plants.Brand | JK Global Imports #ad |
Manufacturer | The Bonsai Supply #ad |
Height | 8 Inches |
Length | 12 Inches |
Width | 3 Inches |
More information #ad
5. TOYPOPOR
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TOYPOPOR Black Horticultural Lava Rock Soil Additive for Cacti Succulents Plants No Dyes or Chemicals 100% Pure Volcanic Rock 2.2LB Top Dressing
#adTOYPOPOR #ad - Customizable mix -- lava rock is used as a soil additive or top dressing in the art of bonsai. Useful and size: the black lava rock is 2. 2lb. Easy to maintain -- focus on the most satisfying part of maintaining a plant.Helps to maintain moisture, prevent erosion, aerate soil, and improve drainage. Adding porous lava rocks instead of mulch to maintain plants like orchids, cacti, succulents, and bonsai trees ensures proper drainage while maintaining moisture.
More information #ad
Toypopor lava rock soil additive can be mixed with ingredients such as pine bark fines, granite grit, calcined clay, and or dirt to create soil specific to your needs. Ideal drainage -- the porosity of lava rocks allows for excellent drainage while maintaining moisture within soil to allow your newly potted, acid-loving plants to cultivate and flourish. Multi-use -- the temperature tolerance and quality of toyPOPOR lava rocks make it useful for filling aquariums, ashtrays, fire media, fire pits, garden soil amendment, in addition to top dressing for plants. Volcanic rock great as a ground cover or for garden paths and planter beds.
Brand | TOYPOPOR #ad |
Manufacturer | TOYPOPOR #ad |
Weight | 2.2 Pounds |
More information #ad
6. Rio Hamza Trading
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Soil Additive for Bonsai, Cacti, Plants, No Artificial Colors, Succulents, Horticultural Mini Red/Maroon Lava Rock Pebbles, 100% Pure Volcanic Rock 4QT
#adRio Hamza Trading #ad - Create your own boons mix: Lava Rock is a necessary component of the world renowned professional Bonsai grower community choice potting mixture.4 dry quart size: comes in a 4 quart size bag for your small planting or repotting needs. Ready to use: red lava rock is sifted and sieved for a uniform size that is ready for direct potting use.
More information #ad
The best bonsai soil additive : Lava Rock is the all around cleanest and safest Bonsai soil additive product. Premium bonsai aggregate: prewashed with no artificial fillers or colors. This is a premium quality lava rock substrate for potting Bonsai, succulents, cacti, and other plants.Brand | Rio Hamza Trading #ad |
Manufacturer | Rio Hamza Trading #ad |
More information #ad
7. wohohoho
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Wohohoho 2.2lbs Horticultural Lava Rocks Mix, Outdoor Indoor Colorful Decorative Rocks for Drainage Top-Dressing, Succulent Cactus Orchids Natural Potted Soil Additives, Terrarium
#adwohohoho #ad - All of them have been sieved to discard dust and coarse particles. The porosity of lava rocks allows for excellent drainage while maintaining moisture within soil and also supplying the necessary nutrition for plants growing.Ideal drainage: faster draining blend, cacti, succulents, get rid of root rot. Potted soil additives: horticultural black lava an ideal amendment for bonsai soil, adds weight to stabilize plants in the soil, can also be used for top dressing, its wet-dry color helps set water schedules.2
More information #ad
2. 2lbs natural horticultural Lava Rocks Mix come in an reusable plastic bottle. Adding these porous lava rocks instead of mulch to maintain plants such as orchids, and bonsai trees. Diy rocks: these colorful lava rocks are good for outdoor indoor home decoration, succulent, craft projects, scene setting, vase fillers, cactus bonsai, houseplant, fairy Gardening, garden, terrarium, flowerpot, outdoor decorative and more.100% natural volcanic scoria: pre-washed with no artificial fillers or colors, does not break down easily. Neutralize soil pH, providing a better growth environment for plants.
Brand | wohohoho #ad |
Manufacturer | Wohohoho #ad |
Height | 3.94 Inches |
Length | 5.91 Inches |
Width | 3.94 Inches |
Part Number | Multi Lava Rock |
Model | Multi Lava Rock |
More information #ad
8. Bonsai Outlet
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Used for Top Dressing, Volcanic Rock, Sifted Bonsai and Cactus Soil Additive, Maintains Proper Moisture, 2.25 Quarts, Tinyroots Red Lava Rock for Plants, No Dyes or Chemicals
#adBonsai Outlet #ad - All natural red lava rocks for plants: no artificial coloring, No chemicals. Ensure proper drainage: crushed lava rock adds a layer of porous rock that helps in maintaining moisture for your bonsai tree, succulents, or houseplant by allowing for excellent and appropriate drainage.Not only can you use these rocks as a top dressing, No dyes, fire pits, garden soil, but they can also be used in aquariums, and ashtrays.
More information #ad
Ready to use: these professional-grade lava rocks are sifted to a uniform size and the lava sand is dust-free. Also can be used as a top dressing for your bonsai, succulents, or cacti. Versatile lava rock for bonsai: for those of you who are looking to mix your own soil mix, grit, the Tinyroots red lava can be used with pine bark fines, surface, and even dirt. Use only the portion of the succulent and bonsai rocks that you require at the current moment and no need to worry about storage. Locally sourced: comes in a resealable bag & manufactured in the USA.
Brand | Bonsai Outlet #ad |
Manufacturer | Tinyroots #ad |
Part Number | REDLAVA38-2QT |
Model | REDLAVA38-2QT |
More information #ad
9. Bonsai Jack
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Red/Maroon 1/4 inch Horticultural Lava Rock Soil Additive for Cacti, No Dyes or Chemicals, Succulents, & Plants, 100% Pure Volcanic Rock 2 Quarts, Bonsai Jack
#adBonsai Jack #ad - Available in 2 quart, 3. 5 gallon, 1 gallon, 7 gallon, 2 gallon, 14 Gallon and 28 Gallon SKUs. The cleanest bonsai aggregate available. Consistent sizes, ready to use, no sifting required. No fillers or artificial coloring. Pre-washed. The cleanest and safest bonsai soil additive guaranteed.More information #ad
Brand | Bonsai Jack #ad |
Manufacturer | Bonsai Jack #ad |
Height | 11.25 Inches |
Length | 2 Inches |
Weight | 1.75 Pounds |
Width | 8 Inches |
Part Number | 799600829554 |
More information #ad
10. OUPENG
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5.7lb Mix Horticultural Lava Rock Pebbles-Decorative Landscaping Gritty Rocks,Pumice Potting Soil Amendment,Additive for Succulent,Cactus Bonsai,Vase Fillers,Terrarium,Fairy Gardening,Top Dressing.
#adOUPENG #ad - Lava rock soil additive is used as a soil additive or top dressing in the art of bonsai. Lava rock can improve water drainage, neutralize soil pH, and help plants grow better. The porosity of lava rocks allows for excellent drainage while maintaining moisture within soil and also supply the necessary nutrition for plants growing.Due to transportation bump, it'll be some powder on surface. Ideal drainage faster draining blend, succulents, cacti, no root Rot. Before you first use, make sure to wash 2-3 times with water until their surface clean and smooth.
More information #ad
Potted soil additivespre-wash with no artificial fillers or colors. You can take the portion you need and then seal it back for perfect prevention and storage. Widely usageno dyes or chemicals, garden soil amendments, Helps to maintain moisture, fire media, aerate soil, and improve drainage. Diy materialwith multiple colors, fish tank, scene setting, garden, houseplant, terrarium, craft projects, succulent, this colorful gritty mix is good for home decoration, vase fillers, cactus bonsai, fairy Gardening, flowerpot, outdoor decorative and more. It can also be used to fill aquariums, prevent erosion, Volcanic rock plus colored gritty mix. Lava rocks can be used for top dressing of plants, ashtrays, and fire pits. Adding porous lava rocks instead of mulch to maintain plants such as orchids, and bonsai trees. Sizethe 5.
Brand | OUPENG #ad |
Manufacturer | OUPENG #ad |
More information #ad